Allen-Bradley Logix5000 User Manual

26 Rockwell Automation Publication ENET-UM004B-EN-P - November 2015
Chapter 3 Configure an EtherNet/IP Communication Module
If you use DNS addressing, or reference the module via host name in MSG
instructions, define these parameters.
Check with your Ethernet network administrator to determine if you must
specify these parameters.
Consider these factors when you determine how to set the network IP address:
• Network isolation from or integration into the plant/enterprise network
• Network size - For large networks or isolated networks, it can be more
convenient to use BOOTP/DHCP server. The BOOTP/DHCP server
also limits the possibility that duplicate IP addresses are assigned.
• Company policies and procedures that deal with plant floor network
installation and maintenance
• Level of involvement by IT personnel in plant-floor network installation
and maintenance
• Type of training that is offered to control engineers and maintenance
personnel
If you use BOOTP/DHCP server in an uplinked subnet where an enterprise
DHCP server exists, the enterprise server can assign an address before the
BOOTP/DHCP server. In this case, you must disconnect from the uplink to set
the address and configure the module to retain its static address before
reconnecting to the uplink. This process is not a problem if you configured node
names in the module and leave DHCP enabled.
Table 2 - EtherNet/IP Network Parameters for DNS Addressing
EtherNet/IP Network Parameter Description
Host name A host name is part of a text address that identifies the host for a module. The full text address of a module is
host_name.domain_name.
Domain name A domain name is part of a text address that identifies the domain in which the module resides. The full text address of a module is
host_name.domain_name. The domain name has a 48-character limit.
If you specify a DNS server, you must type a domain name. Also, if you send email from the module, some mail relay servers require a
domain name during the initial handshake of the SMTP session.
Primary DNS server address The server address identifies any DNS servers that are used in the network. You must have a DNS server that is configured if you
specified a domain name or a host name in the module configuration. The DNS server converts the domain name or host name to an IP
address that is used by the network.
For more information on DNS addressing, see
page 36.
Secondary DNS server address

Allen-Bradley Logix5000 Specifications

General

Brand	Allen-Bradley
Model	Logix5000
Category	Controller
Language	English